/*
This file is part of Ext JS 3.4

Copyright (c) 2011-2013 Sencha Inc

Contact:  http://www.sencha.com/contact

GNU General Public License Usage
This file may be used under the terms of the GNU General Public License version 3.0 as
published by the Free Software Foundation and appearing in the file LICENSE included in the
packaging of this file.

Please review the following information to ensure the GNU General Public License version 3.0
requirements will be met: http://www.gnu.org/copyleft/gpl.html.

If you are unsure which license is appropriate for your use, please contact the sales department
at http://www.sencha.com/contact.

Build date: 2013-04-03 15:07:25
*/
/**
 * @class Ext.ux.TaskBar
 * @extends Ext.util.Observable
 */
Ext.ux.TaskBar = function(app){
    this.app = app;
    this.init();
}

Ext.extend(Ext.ux.TaskBar, Ext.util.Observable, {
    init : function(){
        this.startMenu = new Ext.ux.StartMenu(Ext.apply({
            iconCls: 'user',
            height: 300,
            shadow: true,
            title: 'Jack Slocum',
            width: 300
        }, this.app.startConfig));

        this.startBtn = new Ext.Button({
            text: 'Start',
            id: 'ux-startbutton',
            iconCls:'start',
            menu: this.startMenu,
            menuAlign: 'bl-tl',
            renderTo: 'ux-taskbar-start',
            clickEvent: 'mousedown',
            template: new Ext.Template(
                '<table cellspacing="0" class="x-btn"><tbody class="{1}"><tr>',
                '<td class="ux-startbutton-left"><i>&#160;</i></td>',
                '<td class="ux-startbutton-center"><em class="{2} unselectable="on">',
                    '<button class="x-btn-text" type="{0}" style="height:30px;"></button>',
                '</em></td>',
                '<td class="ux-startbutton-right"><i>&#160;</i></td>',
                '</tr></tbody></table>')
        });

        var width = this.startBtn.getEl().getWidth()+10;

        var sbBox = new Ext.BoxComponent({
            el: 'ux-taskbar-start',
            id: 'TaskBarStart',
            minWidth: width,
            region:'west',
            split: true,
            width: width
        });

        this.tbPanel = new Ext.ux.TaskButtonsPanel({
            el: 'ux-taskbuttons-panel',
            id: 'TaskBarButtons',
            region:'center'
        });

        var container = new Ext.ux.TaskBarContainer({
            el: 'ux-taskbar',
            layout: 'border',
            items: [sbBox,this.tbPanel]
        });

        return this;
    },

    addTaskButton : function(win){
        return this.tbPanel.addButton(win, 'ux-taskbuttons-panel');
    },

    removeTaskButton : function(btn){
        this.tbPanel.removeButton(btn);
    },

    setActiveButton : function(btn){
        this.tbPanel.setActiveButton(btn);
    }
});



/**
 * @class Ext.ux.TaskBarContainer
 * @extends Ext.Container
 */
Ext.ux.TaskBarContainer = Ext.extend(Ext.Container, {
    initComponent : function() {
        Ext.ux.TaskBarContainer.superclass.initComponent.call(this);

        this.el = Ext.get(this.el) || Ext.getBody();
        this.el.setHeight = Ext.emptyFn;
        this.el.setWidth = Ext.emptyFn;
        this.el.setSize = Ext.emptyFn;
        this.el.setStyle({
            overflow:'hidden',
            margin:'0',
            border:'0 none'
        });
        this.el.dom.scroll = 'no';
        this.allowDomMove = false;
        this.autoWidth = true;
        this.autoHeight = true;
        Ext.EventManager.onWindowResize(this.fireResize, this);
        this.renderTo = this.el;
    },

    fireResize : function(w, h){
        this.onResize(w, h, w, h);
        this.fireEvent('resize', this, w, h, w, h);
    }
});



/**
 * @class Ext.ux.TaskButtonsPanel
 * @extends Ext.BoxComponent
 */
Ext.ux.TaskButtonsPanel = Ext.extend(Ext.BoxComponent, {
    activeButton: null,
    enableScroll: true,
    scrollIncrement: 0,
    scrollRepeatInterval: 400,
    scrollDuration: .35,
    animScroll: true,
    resizeButtons: true,
    buttonWidth: 168,
    minButtonWidth: 118,
    buttonMargin: 2,
    buttonWidthSet: false,

    initComponent : function() {
        Ext.ux.TaskButtonsPanel.superclass.initComponent.call(this);
        this.on('resize', this.delegateUpdates);
        this.items = [];

        this.stripWrap = Ext.get(this.el).createChild({
            cls: 'ux-taskbuttons-strip-wrap',
            cn: {
                tag:'ul', cls:'ux-taskbuttons-strip'
            }
        });
        this.stripSpacer = Ext.get(this.el).createChild({
            cls:'ux-taskbuttons-strip-spacer'
        });
        this.strip = new Ext.Element(this.stripWrap.dom.firstChild);

        this.edge = this.strip.createChild({
            tag:'li',
            cls:'ux-taskbuttons-edge'
        });
        this.strip.createChild({
            cls:'x-clear'
        });
    },

    addButton : function(win){
        var li = this.strip.createChild({tag:'li'}, this.edge); // insert before the edge
        var btn = new Ext.ux.TaskBar.TaskButton(win, li);

        this.items.push(btn);

        if(!this.buttonWidthSet){
            this.lastButtonWidth = btn.container.getWidth();
        }

        this.setActiveButton(btn);
        return btn;
    },

    removeButton : function(btn){
        var li = document.getElementById(btn.container.id);
        btn.destroy();
        li.parentNode.removeChild(li);

        var s = [];
        for(var i = 0, len = this.items.length; i < len; i++) {
            if(this.items[i] != btn){
                s.push(this.items[i]);
            }
        }
        this.items = s;

        this.delegateUpdates();
    },

    setActiveButton : function(btn){
        this.activeButton = btn;
        this.delegateUpdates();
    },

    delegateUpdates : function(){
        /*if(this.suspendUpdates){
            return;
        }*/
        if(this.resizeButtons && this.rendered){
            this.autoSize();
        }
        if(this.enableScroll && this.rendered){
            this.autoScroll();
        }
    },

    autoSize : function(){
        var count = this.items.length;
        var ow = this.el.dom.offsetWidth;
        var aw = this.el.dom.clientWidth;

        if(!this.resizeButtons || count < 1 || !aw){ // !aw for display:none
            return;
        }

        var each = Math.max(Math.min(Math.floor((aw-4) / count) - this.buttonMargin, this.buttonWidth), this.minButtonWidth); // -4 for float errors in IE
        var btns = this.stripWrap.dom.getElementsByTagName('button');

        this.lastButtonWidth = Ext.get(btns[0].id).findParent('li').offsetWidth;

        for(var i = 0, len = btns.length; i < len; i++) {
            var btn = btns[i];

            var tw = Ext.get(btns[i].id).findParent('li').offsetWidth;
            var iw = btn.offsetWidth;

            btn.style.width = (each - (tw-iw)) + 'px';
        }
    },

    autoScroll : function(){
        var count = this.items.length;
        var ow = this.el.dom.offsetWidth;
        var tw = this.el.dom.clientWidth;

        var wrap = this.stripWrap;
        var cw = wrap.dom.offsetWidth;
        var pos = this.getScrollPos();
        var l = this.edge.getOffsetsTo(this.stripWrap)[0] + pos;

        if(!this.enableScroll || count < 1 || cw < 20){ // 20 to prevent display:none issues
            return;
        }

        wrap.setWidth(tw); // moved to here because of problem in Safari

        if(l <= tw){
            wrap.dom.scrollLeft = 0;
            //wrap.setWidth(tw); moved from here because of problem in Safari
            if(this.scrolling){
                this.scrolling = false;
                this.el.removeClass('x-taskbuttons-scrolling');
                this.scrollLeft.hide();
                this.scrollRight.hide();
            }
        }else{
            if(!this.scrolling){
                this.el.addClass('x-taskbuttons-scrolling');
            }
            tw -= wrap.getMargins('lr');
            wrap.setWidth(tw > 20 ? tw : 20);
            if(!this.scrolling){
                if(!this.scrollLeft){
                    this.createScrollers();
                }else{
                    this.scrollLeft.show();
                    this.scrollRight.show();
                }
            }
            this.scrolling = true;
            if(pos > (l-tw)){ // ensure it stays within bounds
                wrap.dom.scrollLeft = l-tw;
            }else{ // otherwise, make sure the active button is still visible
                this.scrollToButton(this.activeButton, true); // true to animate
            }
            this.updateScrollButtons();
        }
    },

    createScrollers : function(){
        var h = this.el.dom.offsetHeight; //var h = this.stripWrap.dom.offsetHeight;

        // left
        var sl = this.el.insertFirst({
            cls:'ux-taskbuttons-scroller-left'
        });
        sl.setHeight(h);
        sl.addClassOnOver('ux-taskbuttons-scroller-left-over');
        this.leftRepeater = new Ext.util.ClickRepeater(sl, {
            interval : this.scrollRepeatInterval,
            handler: this.onScrollLeft,
            scope: this
        });
        this.scrollLeft = sl;

        // right
        var sr = this.el.insertFirst({
            cls:'ux-taskbuttons-scroller-right'
        });
        sr.setHeight(h);
        sr.addClassOnOver('ux-taskbuttons-scroller-right-over');
        this.rightRepeater = new Ext.util.ClickRepeater(sr, {
            interval : this.scrollRepeatInterval,
            handler: this.onScrollRight,
            scope: this
        });
        this.scrollRight = sr;
    },

    getScrollWidth : function(){
        return this.edge.getOffsetsTo(this.stripWrap)[0] + this.getScrollPos();
    },

    getScrollPos : function(){
        return parseInt(this.stripWrap.dom.scrollLeft, 10) || 0;
    },

    getScrollArea : function(){
        return parseInt(this.stripWrap.dom.clientWidth, 10) || 0;
    },

    getScrollAnim : function(){
        return {
            duration: this.scrollDuration,
            callback: this.updateScrollButtons,
            scope: this
        };
    },

    getScrollIncrement : function(){
        return (this.scrollIncrement || this.lastButtonWidth+2);
    },

    /* getBtnEl : function(item){
        return document.getElementById(item.id);
    }, */

    scrollToButton : function(item, animate){
        item = item.el.dom.parentNode; // li
        if(!item){ return; }
        var el = item; //this.getBtnEl(item);
        var pos = this.getScrollPos(), area = this.getScrollArea();
        var left = Ext.fly(el).getOffsetsTo(this.stripWrap)[0] + pos;
        var right = left + el.offsetWidth;
        if(left < pos){
            this.scrollTo(left, animate);
        }else if(right > (pos + area)){
            this.scrollTo(right - area, animate);
        }
    },

    scrollTo : function(pos, animate){
        this.stripWrap.scrollTo('left', pos, animate ? this.getScrollAnim() : false);
        if(!animate){
            this.updateScrollButtons();
        }
    },

    onScrollRight : function(){
        var sw = this.getScrollWidth()-this.getScrollArea();
        var pos = this.getScrollPos();
        var s = Math.min(sw, pos + this.getScrollIncrement());
        if(s != pos){
            this.scrollTo(s, this.animScroll);
        }
    },

    onScrollLeft : function(){
        var pos = this.getScrollPos();
        var s = Math.max(0, pos - this.getScrollIncrement());
        if(s != pos){
            this.scrollTo(s, this.animScroll);
        }
    },

    updateScrollButtons : function(){
        var pos = this.getScrollPos();
        this.scrollLeft[pos == 0 ? 'addClass' : 'removeClass']('ux-taskbuttons-scroller-left-disabled');
        this.scrollRight[pos >= (this.getScrollWidth()-this.getScrollArea()) ? 'addClass' : 'removeClass']('ux-taskbuttons-scroller-right-disabled');
    }
});



/**
 * @class Ext.ux.TaskBar.TaskButton
 * @extends Ext.Button
 */
Ext.ux.TaskBar.TaskButton = function(win, el){
    this.win = win;
    Ext.ux.TaskBar.TaskButton.superclass.constructor.call(this, {
        iconCls: win.iconCls,
        text: Ext.util.Format.ellipsis(win.title, 12),
        renderTo: el,
        handler : function(){
            if(win.minimized || win.hidden){
                win.show();
            }else if(win == win.manager.getActive()){
                win.minimize();
            }else{
                win.toFront();
            }
        },
        clickEvent:'mousedown',
        template: new Ext.Template(
            '<table cellspacing="0" class="x-btn {3}"><tbody><tr>',
            '<td class="ux-taskbutton-left"><i>&#160;</i></td>',
            '<td class="ux-taskbutton-center"><em class="{5} unselectable="on">',
                '<button class="x-btn-text {2}" type="{1}" style="height:28px;">{0}</button>',
            '</em></td>',
            '<td class="ux-taskbutton-right"><i>&#160;</i></td>',
            "</tr></tbody></table>")
    });
};

Ext.extend(Ext.ux.TaskBar.TaskButton, Ext.Button, {
    onRender : function(){
        Ext.ux.TaskBar.TaskButton.superclass.onRender.apply(this, arguments);

        this.cmenu = new Ext.menu.Menu({
            items: [{
                text: 'Restore',
                handler: function(){
                    if(!this.win.isVisible()){
                        this.win.show();
                    }else{
                        this.win.restore();
                    }
                },
                scope: this
            },{
                text: 'Minimize',
                handler: this.win.minimize,
                scope: this.win
            },{
                text: 'Maximize',
                handler: this.win.maximize,
                scope: this.win
            }, '-', {
                text: 'Close',
                handler: this.closeWin.createDelegate(this, this.win, true),
                scope: this.win
            }]
        });

        this.cmenu.on('beforeshow', function(){
            var items = this.cmenu.items.items;
            var w = this.win;
            items[0].setDisabled(w.maximized !== true && w.hidden !== true);
            items[1].setDisabled(w.minimized === true);
            items[2].setDisabled(w.maximized === true || w.hidden === true);
        }, this);

        this.el.on('contextmenu', function(e){
            e.stopEvent();
            if(!this.cmenu.el){
                this.cmenu.render();
            }
            var xy = e.getXY();
            xy[1] -= this.cmenu.el.getHeight();
            this.cmenu.showAt(xy);
        }, this);
    },

    closeWin : function(cMenu, e, win){
        if(!win.isVisible()){
            win.show();
        }else{
            win.restore();
        }
        win.close();
    }
});